File-cutting machine



Patented Mar. 1'5

A. WERD.

lllmlmm nll FILE CUTTING MACHINE'.

(NoModel.)

' STATES Trice.

ALFRED WEED, OF ANDERSON, INDIANA.

FILE-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 600,817, dated March 15, 1898.

Application led May '7, 1897. Serial No. 635,536. (No model.)

To all whom t may concern:

Be it known that I, ALFRED VVEED, a citi- Zen of the United Stat-es, residing at Anderson, in the county of Madison and State of Indiana, have invented certain new and use- In the accompanying drawings, forming a part of this specification, and in which like letters and numerals of reference indicate corresponding parts, Figure lis a sectionalelevation of a file-cutting machine embodying the invention, parts being broken away; and Fig. 2 is a front elevation of the same, parts being in section. Fig. 3 is an elevation of a modiication.

Attempts have heretofore been made to produce files by machinery which possess all of the advantages of the best hand-cut iiles, but in most instances with only partial success. In some instances the apparatus has been constructed to permit a certain play of the cutting-tool as it enters the tile-blank; but usually this has been attained by a loss of the positive guiding of the tool-holder under the action of its spring or hammer. In the present invention I obviate this disadvantage by arranging the plunger or toolholder to reciprocate at an incline in positive guides of the frame and in supporting the cutting-tool upon the holder at an incline more nearly vertical than that of the holder itself, but in the same general direction. By this arrangement at each downward stroke of the plunger the edge of the cutting-tool is given not only a downward, but also a positive forward movement as it enters the blank,

, resulting in the formation of clear-cut, we1ldefined, and uniform teeth equal to, if not superior to, those of the best hand-cut file.

Referring more particularly to the drawings, A designates the frame of the machine, having a bed-plate B, which is movable, as

usual, to carry the ile or rasp blank C. The devices for accomplishing this movement of the bed-plate are'well known in the art and need not be described herein.

Formed integral with the frame A, above and arranged to overhang the bed-plate, is a head D, formed with a central chamber l and With an inclined channel 2. Within the inclined channel 2 is adapted to reciprocate a plunger 3, provided with suitable means for depressing it, which means in the present instance consist of a gum-spring 4, interposed between the upper end of the plunger, and a disk 5, adjustable in a bracket of the frame by means of a screw 6. Devices are also provided for intermittently elevating 'the plunger against the action of its `spring, and,V as

shown, these devices consist of an eccentriccam 7 within the chamber l, carried upon a shaft 8, extending through the frame and supporting a band-wheel 9, and projecting from the side of the plunger 3 is a stud 10, arranged to be struck by the rotating cam to intermittently elevate the plunger.

Carried upon the plunger 3 at an angle thereto is the bevel-edged cutting-tool This tool is inclined-in the same general direction as the plunger, but is set at a greater angle to the face of the bed-plate or file-blank C than is the plunger.

As shown, the cutting-tool is detachably connected to a tool-holder 12, which is itself detachably supported upon and at an angle to the plunger 3. It will be understood, however, that the cutting-tool may be carried directly upon the plunger, as shown in Fig. 3, thereby dispensing with the detachable holder l2.

From the above it will be apparent that the plunger and cutting-tool are secured in fixed relation to each other and that the plunger is arranged to reciprocate in fixed guides without lateral play, in consequence of which not only is it possible to cutteeth more uniformly, but they may be formed sharper and lbetter than it is possible to form them by certain machines now in use.

Without limiting myself to the precise construction and arrangement of parts shown and described, I claim as my invention- In a file-cutting machine, the combination with the frame, of a plunger adapted to re- IOO ciprocate in guides at an angle to the face of a. file-blank, means for reciprocating lthe plunger, and a beveled-edge cutting-tool carried in a, fixed position upon the plunger and arranged et an angle to the line of movement of the plunger, but at a less angle with respect to the perpendicular, substantially als described.

In testimony whereof I have. signed my name to this specification in the presence of Io two subscribing Witnesses.

ALFRED WEED.

Witnesses:

J. W. MCNEVIN, W. R. WERKING. 

